The “Give Your Heart a Break” singer posted a transformation picture to her Instagram on Dec. 31 showing how she’s shed a few pounds in 2014.

“I was beautiful then, and I’m beautiful now,” the 22-year-old captioned the split screen. “I decided to focus on bettering myself by making changes in my life with health, balance, endurance and consistency.”

She urged her fans to take action in their own lives. “You don’t have to wait till the beginning of the new year to make resolutions for yourself,” she explained. “It’s all about loving and taking care of the only body you will ever have … Cherish it, love it, embrace it. Because when you do … it begins to show. Goodbye 2014. Who’s excited for what we can accomplish in 2015?!! Let’s do this!!!”

“Wilmer noticed and called me out on it, which was a relief,” she said of her experience. “I was done being afraid of food and so tired of overeating and not knowing why I did it. Now I’m on a structured meal plan.”